4 select ARCH_SUPPORTS_UPROBES
5 select ARCH_MIGHT_HAVE_PC_PARPORT
6 select ARCH_MIGHT_HAVE_PC_SERIO
7 select ARCH_USE_CMPXCHG_LOCKREF if 64BIT
8 select ARCH_USE_BUILTIN_BSWAP
9 select HAVE_CONTEXT_TRACKING
10 select HAVE_GENERIC_DMA_COHERENT
13 select HAVE_PERF_EVENTS
14 select PERF_USE_VMALLOC
16 select HAVE_ARCH_SECCOMP_FILTER
17 select HAVE_ARCH_TRACEHOOK
18 select HAVE_BPF_JIT if !CPU_MICROMIPS
19 select HAVE_FUNCTION_TRACER
20 select HAVE_DYNAMIC_FTRACE
21 select HAVE_FTRACE_MCOUNT_RECORD
22 select HAVE_C_RECORDMCOUNT
23 select HAVE_FUNCTION_GRAPH_TRACER
25 select HAVE_KRETPROBES
26 select HAVE_SYSCALL_TRACEPOINTS
27 select HAVE_DEBUG_KMEMLEAK
28 select HAVE_SYSCALL_TRACEPOINTS
29 select ARCH_HAS_ELF_RANDOMIZE
30 select HAVE_ARCH_TRANSPARENT_HUGEPAGE if CPU_SUPPORTS_HUGEPAGES && 64BIT
31 select RTC_LIB if !MACH_LOONGSON64
32 select GENERIC_ATOMIC64 if !64BIT
33 select ARCH_HAS_ATOMIC64_DEC_IF_POSITIVE
34 select HAVE_DMA_CONTIGUOUS
35 select HAVE_DMA_API_DEBUG
36 select GENERIC_IRQ_PROBE
37 select GENERIC_IRQ_SHOW
38 select GENERIC_PCI_IOMAP
39 select HAVE_ARCH_JUMP_LABEL
40 select ARCH_WANT_IPC_PARSE_VERSION
41 select IRQ_FORCED_THREADING
43 select HAVE_MEMBLOCK_NODE_MAP
44 select ARCH_DISCARD_MEMBLOCK
45 select GENERIC_SMP_IDLE_THREAD
46 select BUILDTIME_EXTABLE_SORT
47 select GENERIC_CLOCKEVENTS
48 select GENERIC_SCHED_CLOCK if !CAVIUM_OCTEON_SOC
49 select GENERIC_CMOS_UPDATE
50 select HAVE_MOD_ARCH_SPECIFIC
52 select MODULES_USE_ELF_REL if MODULES
53 select MODULES_USE_ELF_RELA if MODULES && 64BIT
54 select CLONE_BACKWARDS
55 select HAVE_DEBUG_STACKOVERFLOW
56 select HAVE_CC_STACKPROTECTOR
57 select CPU_PM if CPU_IDLE
58 select ARCH_HAS_TICK_BROADCAST if GENERIC_CLOCKEVENTS_BROADCAST
59 select ARCH_BINFMT_ELF_STATE
60 select SYSCTL_EXCEPTION_TRACE
61 select HAVE_VIRT_CPU_ACCOUNTING_GEN
62 select HAVE_IRQ_TIME_ACCOUNTING
63 select GENERIC_TIME_VSYSCALL
64 select ARCH_CLOCKSOURCE_DATA
65 select HANDLE_DOMAIN_IRQ
67 menu "Machine selection"
74 bool "Alchemy processor based machines"
75 select ARCH_PHYS_ADDR_T_64BIT
79 select DMA_MAYBE_COHERENT # Au1000,1500,1100 aren't, rest is
80 select SYS_HAS_CPU_MIPS32_R1
81 select SYS_SUPPORTS_32BIT_KERNEL
82 select SYS_SUPPORTS_APM_EMULATION
83 select ARCH_REQUIRE_GPIOLIB
84 select SYS_SUPPORTS_ZBOOT
88 bool "Texas Instruments AR7"
90 select DMA_NONCOHERENT
96 select SYS_HAS_CPU_MIPS32_R1
97 select SYS_HAS_EARLY_PRINTK
98 select SYS_SUPPORTS_32BIT_KERNEL
99 select SYS_SUPPORTS_LITTLE_ENDIAN
100 select SYS_SUPPORTS_MIPS16
101 select SYS_SUPPORTS_ZBOOT_UART16550
102 select ARCH_REQUIRE_GPIOLIB
106 Support for the Texas Instruments AR7 System-on-a-Chip
107 family: TNETD7100, 7200 and 7300.
110 bool "Atheros AR231x/AR531x SoC support"
113 select DMA_NONCOHERENT
116 select SYS_HAS_CPU_MIPS32_R1
117 select SYS_SUPPORTS_BIG_ENDIAN
118 select SYS_SUPPORTS_32BIT_KERNEL
119 select SYS_HAS_EARLY_PRINTK
121 Support for Atheros AR231x and Atheros AR531x based boards
124 bool "Atheros AR71XX/AR724X/AR913X based boards"
125 select ARCH_HAS_RESET_CONTROLLER
126 select ARCH_REQUIRE_GPIOLIB
130 select DMA_NONCOHERENT
136 select SYS_HAS_CPU_MIPS32_R2
137 select SYS_HAS_EARLY_PRINTK
138 select SYS_SUPPORTS_32BIT_KERNEL
139 select SYS_SUPPORTS_BIG_ENDIAN
140 select SYS_SUPPORTS_MIPS16
141 select SYS_SUPPORTS_ZBOOT_UART_PROM
144 Support for the Atheros AR71XX/AR724X/AR913X SoCs.
147 bool "Broadcom Generic BMIPS kernel"
149 select NO_EXCEPT_FILL
155 select BCM6345_L1_IRQ
156 select BCM7038_L1_IRQ
157 select BCM7120_L2_IRQ
158 select BRCMSTB_L2_IRQ
160 select DMA_NONCOHERENT
161 select SYS_SUPPORTS_32BIT_KERNEL
162 select SYS_SUPPORTS_LITTLE_ENDIAN
163 select SYS_SUPPORTS_BIG_ENDIAN
164 select SYS_SUPPORTS_HIGHMEM
165 select SYS_HAS_CPU_BMIPS32_3300
166 select SYS_HAS_CPU_BMIPS4350
167 select SYS_HAS_CPU_BMIPS4380
168 select SYS_HAS_CPU_BMIPS5000
170 select USB_EHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
171 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
172 select USB_OHCI_BIG_ENDIAN_DESC if CPU_BIG_ENDIAN
173 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
174 select ARCH_WANT_OPTIONAL_GPIOLIB
176 Build a generic DT-based kernel image that boots on select
177 BCM33xx cable modem chips, BCM63xx DSL chips, and BCM7xxx set-top
178 box chips. Note that CONFIG_CPU_BIG_ENDIAN/CONFIG_CPU_LITTLE_ENDIAN
179 must be set appropriately for your board.
182 bool "Broadcom BCM47XX based boards"
183 select ARCH_WANT_OPTIONAL_GPIOLIB
187 select DMA_NONCOHERENT
190 select SYS_HAS_CPU_MIPS32_R1
191 select NO_EXCEPT_FILL
192 select SYS_SUPPORTS_32BIT_KERNEL
193 select SYS_SUPPORTS_LITTLE_ENDIAN
194 select SYS_SUPPORTS_MIPS16
195 select SYS_HAS_EARLY_PRINTK
196 select USE_GENERIC_EARLY_PRINTK_8250
198 select LEDS_GPIO_REGISTER
202 Support for BCM47XX based boards
205 bool "Broadcom BCM63XX based boards"
210 select DMA_NONCOHERENT
212 select SYS_SUPPORTS_32BIT_KERNEL
213 select SYS_SUPPORTS_BIG_ENDIAN
214 select SYS_HAS_EARLY_PRINTK
216 select ARCH_REQUIRE_GPIOLIB
218 select MIPS_L1_CACHE_SHIFT_4
220 Support for BCM63XX based boards
227 select DMA_NONCOHERENT
233 select PCI_GT64XXX_PCI0
235 select SYS_HAS_CPU_NEVADA
236 select SYS_HAS_EARLY_PRINTK
237 select SYS_SUPPORTS_32BIT_KERNEL
238 select SYS_SUPPORTS_64BIT_KERNEL
239 select SYS_SUPPORTS_LITTLE_ENDIAN
240 select USE_GENERIC_EARLY_PRINTK_8250
242 config MACH_DECSTATION
246 select CEVT_R4K if CPU_R4X00
248 select CSRC_R4K if CPU_R4X00
249 select CPU_DADDI_WORKAROUNDS if 64BIT
250 select CPU_R4000_WORKAROUNDS if 64BIT
251 select CPU_R4400_WORKAROUNDS if 64BIT
252 select DMA_NONCOHERENT
255 select SYS_HAS_CPU_R3000
256 select SYS_HAS_CPU_R4X00
257 select SYS_SUPPORTS_32BIT_KERNEL
258 select SYS_SUPPORTS_64BIT_KERNEL
259 select SYS_SUPPORTS_LITTLE_ENDIAN
260 select SYS_SUPPORTS_128HZ
261 select SYS_SUPPORTS_256HZ
262 select SYS_SUPPORTS_1024HZ
263 select MIPS_L1_CACHE_SHIFT_4
265 This enables support for DEC's MIPS based workstations. For details
266 see the Linux/MIPS FAQ on <http://www.linux-mips.org/> and the
267 DECstation porting pages on <http://decstation.unix-ag.org/>.
269 If you have one of the following DECstation Models you definitely
270 want to choose R4xx0 for the CPU Type:
277 otherwise choose R3000.
280 bool "Jazz family of machines"
283 select ARCH_MAY_HAVE_PC_FDC
286 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
287 select GENERIC_ISA_DMA
288 select HAVE_PCSPKR_PLATFORM
293 select SYS_HAS_CPU_R4X00
294 select SYS_SUPPORTS_32BIT_KERNEL
295 select SYS_SUPPORTS_64BIT_KERNEL
296 select SYS_SUPPORTS_100HZ
298 This a family of machines based on the MIPS R4030 chipset which was
299 used by several vendors to build RISC/os and Windows NT workstations.
300 Members include the Acer PICA, MIPS Magnum 4000, MIPS Millennium and
301 Olivetti M700-10 workstations.
304 bool "Ingenic SoC based machines"
305 select SYS_SUPPORTS_32BIT_KERNEL
306 select SYS_SUPPORTS_LITTLE_ENDIAN
307 select SYS_SUPPORTS_ZBOOT_UART16550
308 select DMA_NONCOHERENT
310 select ARCH_REQUIRE_GPIOLIB
312 select GENERIC_IRQ_CHIP
318 bool "Lantiq based platforms"
319 select DMA_NONCOHERENT
323 select SYS_HAS_CPU_MIPS32_R1
324 select SYS_HAS_CPU_MIPS32_R2
325 select SYS_SUPPORTS_BIG_ENDIAN
326 select SYS_SUPPORTS_32BIT_KERNEL
327 select SYS_SUPPORTS_MIPS16
328 select SYS_SUPPORTS_MULTITHREADING
329 select SYS_HAS_EARLY_PRINTK
330 select ARCH_REQUIRE_GPIOLIB
336 select PINCTRL_LANTIQ
337 select ARCH_HAS_RESET_CONTROLLER
338 select RESET_CONTROLLER
341 bool "LASAT Networks platforms"
345 select DMA_NONCOHERENT
346 select SYS_HAS_EARLY_PRINTK
349 select PCI_GT64XXX_PCI0
351 select R5000_CPU_SCACHE
352 select SYS_HAS_CPU_R5000
353 select SYS_SUPPORTS_32BIT_KERNEL
354 select SYS_SUPPORTS_64BIT_KERNEL if BROKEN
355 select SYS_SUPPORTS_LITTLE_ENDIAN
357 config MACH_LOONGSON32
358 bool "Loongson-1 family of machines"
359 select SYS_SUPPORTS_ZBOOT
361 This enables support for the Loongson-1 family of machines.
363 Loongson-1 is a family of 32-bit MIPS-compatible SoCs developed by
364 the Institute of Computing Technology (ICT), Chinese Academy of
367 config MACH_LOONGSON64
368 bool "Loongson-2/3 family of machines"
369 select SYS_SUPPORTS_ZBOOT
371 This enables the support of Loongson-2/3 family of machines.
373 Loongson-2 is a family of single-core CPUs and Loongson-3 is a
374 family of multi-core CPUs. They are both 64-bit general-purpose
375 MIPS-compatible CPUs. Loongson-2/3 are developed by the Institute
376 of Computing Technology (ICT), Chinese Academy of Sciences (CAS)
377 in the People's Republic of China. The chief architect is Professor
380 config MACH_PISTACHIO
381 bool "IMG Pistachio SoC based boards"
382 select ARCH_REQUIRE_GPIOLIB
386 select CLKSRC_MIPS_GIC
389 select DMA_MAYBE_COHERENT
393 select MIPS_CPU_SCACHE
397 select SYS_HAS_CPU_MIPS32_R2
398 select SYS_SUPPORTS_32BIT_KERNEL
399 select SYS_SUPPORTS_LITTLE_ENDIAN
400 select SYS_SUPPORTS_MIPS_CPS
401 select SYS_SUPPORTS_MULTITHREADING
402 select SYS_SUPPORTS_ZBOOT
403 select SYS_HAS_EARLY_PRINTK
404 select USE_GENERIC_EARLY_PRINTK_8250
407 This enables support for the IMG Pistachio SoC platform.
410 bool "MIPSfpga Xilinx based boards"
411 select ARCH_REQUIRE_GPIOLIB
420 select MIPS_CPU_SCACHE
421 select SYS_HAS_EARLY_PRINTK
422 select SYS_HAS_CPU_MIPS32_R2
423 select SYS_SUPPORTS_32BIT_KERNEL
424 select SYS_SUPPORTS_LITTLE_ENDIAN
425 select SYS_SUPPORTS_ZBOOT_UART16550
427 select USE_GENERIC_EARLY_PRINTK_8250
429 This enables support for the IMG University Program MIPSfpga platform.
432 bool "MIPS Malta board"
433 select ARCH_MAY_HAVE_PC_FDC
439 select CLKSRC_MIPS_GIC
441 select DMA_MAYBE_COHERENT
442 select GENERIC_ISA_DMA
443 select HAVE_PCSPKR_PLATFORM
450 select MIPS_CPU_SCACHE
451 select MIPS_L1_CACHE_SHIFT_6
452 select PCI_GT64XXX_PCI0
456 select SYS_HAS_CPU_MIPS32_R1
457 select SYS_HAS_CPU_MIPS32_R2
458 select SYS_HAS_CPU_MIPS32_R3_5
459 select SYS_HAS_CPU_MIPS32_R5
460 select SYS_HAS_CPU_MIPS32_R6
461 select SYS_HAS_CPU_MIPS64_R1
462 select SYS_HAS_CPU_MIPS64_R2
463 select SYS_HAS_CPU_MIPS64_R6
464 select SYS_HAS_CPU_NEVADA
465 select SYS_HAS_CPU_RM7000
466 select SYS_SUPPORTS_32BIT_KERNEL
467 select SYS_SUPPORTS_64BIT_KERNEL
468 select SYS_SUPPORTS_BIG_ENDIAN
469 select SYS_SUPPORTS_HIGHMEM
470 select SYS_SUPPORTS_LITTLE_ENDIAN
471 select SYS_SUPPORTS_MICROMIPS
472 select SYS_SUPPORTS_MIPS_CMP
473 select SYS_SUPPORTS_MIPS_CPS
474 select SYS_SUPPORTS_MIPS16
475 select SYS_SUPPORTS_MULTITHREADING
476 select SYS_SUPPORTS_SMARTMIPS
477 select SYS_SUPPORTS_ZBOOT
479 select ZONE_DMA32 if 64BIT
483 This enables support for the MIPS Technologies Malta evaluation
487 bool "Microchip PIC32 Family"
489 This enables support for the Microchip PIC32 family of platforms.
491 Microchip PIC32 is a family of general-purpose 32 bit MIPS core
495 bool "MIPS SEAD3 board"
501 select CLKSRC_MIPS_GIC
503 select CPU_MIPSR2_IRQ_VI
504 select CPU_MIPSR2_IRQ_EI
505 select DMA_NONCOHERENT
510 select SYS_HAS_CPU_MIPS32_R1
511 select SYS_HAS_CPU_MIPS32_R2
512 select SYS_HAS_CPU_MIPS32_R6
513 select SYS_HAS_CPU_MIPS64_R1
514 select SYS_HAS_EARLY_PRINTK
515 select SYS_SUPPORTS_32BIT_KERNEL
516 select SYS_SUPPORTS_64BIT_KERNEL
517 select SYS_SUPPORTS_BIG_ENDIAN
518 select SYS_SUPPORTS_LITTLE_ENDIAN
519 select SYS_SUPPORTS_SMARTMIPS
520 select SYS_SUPPORTS_MICROMIPS
521 select SYS_SUPPORTS_MIPS16
522 select USB_EHCI_BIG_ENDIAN_DESC
523 select USB_EHCI_BIG_ENDIAN_MMIO
526 This enables support for the MIPS Technologies SEAD3 evaluation
530 bool "NEC EMMA2RH Mark-eins board"
534 This enables support for the NEC Electronics Mark-eins boards.
537 bool "NEC VR4100 series based machines"
540 select SYS_HAS_CPU_VR41XX
541 select SYS_SUPPORTS_MIPS16
542 select ARCH_REQUIRE_GPIOLIB
545 bool "NXP STB220 board"
548 Support for NXP Semiconductors STB220 Development Board.
555 Support for NXP Semiconductors STB225 Development Board.
558 bool "PMC-Sierra MSP chipsets"
561 select DMA_NONCOHERENT
563 select NO_EXCEPT_FILL
565 select SYS_HAS_CPU_MIPS32_R1
566 select SYS_HAS_CPU_MIPS32_R2
567 select SYS_SUPPORTS_32BIT_KERNEL
568 select SYS_SUPPORTS_BIG_ENDIAN
569 select SYS_SUPPORTS_MIPS16
572 select SERIAL_8250_CONSOLE
573 select USB_EHCI_BIG_ENDIAN_MMIO
574 select USB_EHCI_BIG_ENDIAN_DESC
576 This adds support for the PMC-Sierra family of Multi-Service
577 Processor System-On-A-Chips. These parts include a number
578 of integrated peripherals, interfaces and DSPs in addition to
579 a variety of MIPS cores.
582 bool "Ralink based machines"
586 select DMA_NONCOHERENT
589 select SYS_HAS_CPU_MIPS32_R1
590 select SYS_HAS_CPU_MIPS32_R2
591 select SYS_SUPPORTS_32BIT_KERNEL
592 select SYS_SUPPORTS_LITTLE_ENDIAN
593 select SYS_SUPPORTS_MIPS16
594 select SYS_HAS_EARLY_PRINTK
596 select ARCH_HAS_RESET_CONTROLLER
597 select RESET_CONTROLLER
600 bool "SGI IP22 (Indy/Indigo2)"
606 select DEFAULT_SGI_PARTITION
607 select DMA_NONCOHERENT
611 select IP22_CPU_SCACHE
613 select GENERIC_ISA_DMA_SUPPORT_BROKEN
615 select SGI_HAS_INDYDOG
621 select SYS_HAS_CPU_R4X00
622 select SYS_HAS_CPU_R5000
624 # Disable EARLY_PRINTK for now since it leads to overwritten prom
625 # memory during early boot on some machines.
627 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
628 # for a more details discussion
630 # select SYS_HAS_EARLY_PRINTK
631 select SYS_SUPPORTS_32BIT_KERNEL
632 select SYS_SUPPORTS_64BIT_KERNEL
633 select SYS_SUPPORTS_BIG_ENDIAN
634 select MIPS_L1_CACHE_SHIFT_7
636 This are the SGI Indy, Challenge S and Indigo2, as well as certain
637 OEM variants like the Tandem CMN B006S. To compile a Linux kernel
638 that runs on these, say Y here.
641 bool "SGI IP27 (Origin200/2000)"
645 select DEFAULT_SGI_PARTITION
647 select SYS_HAS_EARLY_PRINTK
649 select NR_CPUS_DEFAULT_64
650 select SYS_HAS_CPU_R10000
651 select SYS_SUPPORTS_64BIT_KERNEL
652 select SYS_SUPPORTS_BIG_ENDIAN
653 select SYS_SUPPORTS_NUMA
654 select SYS_SUPPORTS_SMP
655 select MIPS_L1_CACHE_SHIFT_7
657 This are the SGI Origin 200, Origin 2000 and Onyx 2 Graphics
658 workstations. To compile a Linux kernel that runs on these, say Y
662 bool "SGI IP28 (Indigo2 R10k)"
668 select DEFAULT_SGI_PARTITION
669 select DMA_NONCOHERENT
670 select GENERIC_ISA_DMA_SUPPORT_BROKEN
676 select SGI_HAS_INDYDOG
682 select SYS_HAS_CPU_R10000
684 # Disable EARLY_PRINTK for now since it leads to overwritten prom
685 # memory during early boot on some machines.
687 # See http://www.linux-mips.org/cgi-bin/mesg.cgi?a=linux-mips&i=20091119164009.GA15038%40deprecation.cyrius.com
688 # for a more details discussion
690 # select SYS_HAS_EARLY_PRINTK
691 select SYS_SUPPORTS_64BIT_KERNEL
692 select SYS_SUPPORTS_BIG_ENDIAN
693 select MIPS_L1_CACHE_SHIFT_7
695 This is the SGI Indigo2 with R10000 processor. To compile a Linux
696 kernel that runs on these, say Y here.
705 select DMA_NONCOHERENT
708 select R5000_CPU_SCACHE
709 select RM7000_CPU_SCACHE
710 select SYS_HAS_CPU_R5000
711 select SYS_HAS_CPU_R10000 if BROKEN
712 select SYS_HAS_CPU_RM7000
713 select SYS_HAS_CPU_NEVADA
714 select SYS_SUPPORTS_64BIT_KERNEL
715 select SYS_SUPPORTS_BIG_ENDIAN
717 If you want this kernel to run on SGI O2 workstation, say Y here.
720 bool "Sibyte BCM91120C-CRhine"
723 select SIBYTE_BCM1120
725 select SYS_HAS_CPU_SB1
726 select SYS_SUPPORTS_BIG_ENDIAN
727 select SYS_SUPPORTS_LITTLE_ENDIAN
730 bool "Sibyte BCM91120x-Carmel"
733 select SIBYTE_BCM1120
735 select SYS_HAS_CPU_SB1
736 select SYS_SUPPORTS_BIG_ENDIAN
737 select SYS_SUPPORTS_LITTLE_ENDIAN
740 bool "Sibyte BCM91125C-CRhone"
743 select SIBYTE_BCM1125
745 select SYS_HAS_CPU_SB1
746 select SYS_SUPPORTS_BIG_ENDIAN
747 select SYS_SUPPORTS_HIGHMEM
748 select SYS_SUPPORTS_LITTLE_ENDIAN
751 bool "Sibyte BCM91125E-Rhone"
754 select SIBYTE_BCM1125H
756 select SYS_HAS_CPU_SB1
757 select SYS_SUPPORTS_BIG_ENDIAN
758 select SYS_SUPPORTS_LITTLE_ENDIAN
761 bool "Sibyte BCM91250A-SWARM"
764 select HAVE_PATA_PLATFORM
767 select SYS_HAS_CPU_SB1
768 select SYS_SUPPORTS_BIG_ENDIAN
769 select SYS_SUPPORTS_HIGHMEM
770 select SYS_SUPPORTS_LITTLE_ENDIAN
771 select ZONE_DMA32 if 64BIT
773 config SIBYTE_LITTLESUR
774 bool "Sibyte BCM91250C2-LittleSur"
777 select HAVE_PATA_PLATFORM
780 select SYS_HAS_CPU_SB1
781 select SYS_SUPPORTS_BIG_ENDIAN
782 select SYS_SUPPORTS_HIGHMEM
783 select SYS_SUPPORTS_LITTLE_ENDIAN
785 config SIBYTE_SENTOSA
786 bool "Sibyte BCM91250E-Sentosa"
791 select SYS_HAS_CPU_SB1
792 select SYS_SUPPORTS_BIG_ENDIAN
793 select SYS_SUPPORTS_LITTLE_ENDIAN
796 bool "Sibyte BCM91480B-BigSur"
799 select NR_CPUS_DEFAULT_4
800 select SIBYTE_BCM1x80
802 select SYS_HAS_CPU_SB1
803 select SYS_SUPPORTS_BIG_ENDIAN
804 select SYS_SUPPORTS_HIGHMEM
805 select SYS_SUPPORTS_LITTLE_ENDIAN
806 select ZONE_DMA32 if 64BIT
809 bool "SNI RM200/300/400"
810 select FW_ARC if CPU_LITTLE_ENDIAN
811 select FW_ARC32 if CPU_LITTLE_ENDIAN
812 select FW_SNIPROM if CPU_BIG_ENDIAN
813 select ARCH_MAY_HAVE_PC_FDC
817 select DEFAULT_SGI_PARTITION if CPU_BIG_ENDIAN
818 select DMA_NONCOHERENT
819 select GENERIC_ISA_DMA
820 select HAVE_PCSPKR_PLATFORM
827 select SWAP_IO_SPACE if CPU_BIG_ENDIAN
828 select SYS_HAS_CPU_R4X00
829 select SYS_HAS_CPU_R5000
830 select SYS_HAS_CPU_R10000
831 select R5000_CPU_SCACHE
832 select SYS_HAS_EARLY_PRINTK
833 select SYS_SUPPORTS_32BIT_KERNEL
834 select SYS_SUPPORTS_64BIT_KERNEL
835 select SYS_SUPPORTS_BIG_ENDIAN
836 select SYS_SUPPORTS_HIGHMEM
837 select SYS_SUPPORTS_LITTLE_ENDIAN
839 The SNI RM200/300/400 are MIPS-based machines manufactured by
840 Siemens Nixdorf Informationssysteme (SNI), parent company of Pyramid
841 Technology and now in turn merged with Fujitsu. Say Y here to
842 support this machine type.
845 bool "Toshiba TX39 series based machines"
848 bool "Toshiba TX49 series based machines"
850 config MIKROTIK_RB532
851 bool "Mikrotik RB532 boards"
854 select DMA_NONCOHERENT
857 select SYS_HAS_CPU_MIPS32_R1
858 select SYS_SUPPORTS_32BIT_KERNEL
859 select SYS_SUPPORTS_LITTLE_ENDIAN
862 select ARCH_REQUIRE_GPIOLIB
863 select MIPS_L1_CACHE_SHIFT_4
865 Support the Mikrotik(tm) RouterBoard 532 series,
866 based on the IDT RC32434 SoC.
868 config CAVIUM_OCTEON_SOC
869 bool "Cavium Networks Octeon SoC based boards"
871 select ARCH_PHYS_ADDR_T_64BIT
873 select SYS_SUPPORTS_64BIT_KERNEL
874 select SYS_SUPPORTS_BIG_ENDIAN
876 select EDAC_ATOMIC_SCRUB
877 select SYS_SUPPORTS_LITTLE_ENDIAN
878 select SYS_SUPPORTS_HOTPLUG_CPU if CPU_BIG_ENDIAN
879 select SYS_HAS_EARLY_PRINTK
880 select SYS_HAS_CPU_CAVIUM_OCTEON
885 select ARCH_REQUIRE_GPIOLIB
888 select ARCH_SPARSEMEM_ENABLE
889 select SYS_SUPPORTS_SMP
890 select NR_CPUS_DEFAULT_16
892 select MTD_COMPLEX_MAPPINGS
894 This option supports all of the Octeon reference boards from Cavium
895 Networks. It builds a kernel that dynamically determines the Octeon
896 CPU type and supports all known board reference implementations.
897 Some of the supported boards are:
904 Say Y here for most Octeon reference boards.
907 bool "Netlogic XLR/XLS based systems"
910 select SYS_HAS_CPU_XLR
911 select SYS_SUPPORTS_SMP
914 select SYS_SUPPORTS_32BIT_KERNEL
915 select SYS_SUPPORTS_64BIT_KERNEL
916 select ARCH_PHYS_ADDR_T_64BIT
917 select SYS_SUPPORTS_BIG_ENDIAN
918 select SYS_SUPPORTS_HIGHMEM
920 select NR_CPUS_DEFAULT_32
924 select ZONE_DMA32 if 64BIT
926 select SYS_HAS_EARLY_PRINTK
927 select SYS_SUPPORTS_ZBOOT
928 select SYS_SUPPORTS_ZBOOT_UART16550
930 Support for systems based on Netlogic XLR and XLS processors.
931 Say Y here if you have a XLR or XLS based board.
934 bool "Netlogic XLP based systems"
937 select SYS_HAS_CPU_XLP
938 select SYS_SUPPORTS_SMP
940 select SYS_SUPPORTS_32BIT_KERNEL
941 select SYS_SUPPORTS_64BIT_KERNEL
942 select ARCH_PHYS_ADDR_T_64BIT
943 select ARCH_REQUIRE_GPIOLIB
944 select SYS_SUPPORTS_BIG_ENDIAN
945 select SYS_SUPPORTS_LITTLE_ENDIAN
946 select SYS_SUPPORTS_HIGHMEM
948 select NR_CPUS_DEFAULT_32
952 select ZONE_DMA32 if 64BIT
954 select SYS_HAS_EARLY_PRINTK
956 select SYS_SUPPORTS_ZBOOT
957 select SYS_SUPPORTS_ZBOOT_UART16550
959 This board is based on Netlogic XLP Processor.
960 Say Y here if you have a XLP based board.
963 bool "Para-Virtualized guest system"
967 select SYS_SUPPORTS_64BIT_KERNEL
968 select SYS_SUPPORTS_32BIT_KERNEL
969 select SYS_SUPPORTS_BIG_ENDIAN
970 select SYS_SUPPORTS_SMP
971 select NR_CPUS_DEFAULT_4
972 select SYS_HAS_EARLY_PRINTK
973 select SYS_HAS_CPU_MIPS32_R2
974 select SYS_HAS_CPU_MIPS64_R2
975 select SYS_HAS_CPU_CAVIUM_OCTEON
979 This option supports guest running under ????
983 source "arch/mips/alchemy/Kconfig"
984 source "arch/mips/ath25/Kconfig"
985 source "arch/mips/ath79/Kconfig"
986 source "arch/mips/bcm47xx/Kconfig"
987 source "arch/mips/bcm63xx/Kconfig"
988 source "arch/mips/bmips/Kconfig"
989 source "arch/mips/jazz/Kconfig"
990 source "arch/mips/jz4740/Kconfig"
991 source "arch/mips/lantiq/Kconfig"
992 source "arch/mips/lasat/Kconfig"
993 source "arch/mips/pic32/Kconfig"
994 source "arch/mips/pistachio/Kconfig"
995 source "arch/mips/pmcs-msp71xx/Kconfig"
996 source "arch/mips/ralink/Kconfig"
997 source "arch/mips/sgi-ip27/Kconfig"
998 source "arch/mips/sibyte/Kconfig"
999 source "arch/mips/txx9/Kconfig"
1000 source "arch/mips/vr41xx/Kconfig"
1001 source "arch/mips/cavium-octeon/Kconfig"
1002 source "arch/mips/loongson32/Kconfig"
1003 source "arch/mips/loongson64/Kconfig"
1004 source "arch/mips/netlogic/Kconfig"
1005 source "arch/mips/paravirt/Kconfig"
1006 source "arch/mips/xilfpga/Kconfig"
1010 config RWSEM_GENERIC_SPINLOCK
1014 config RWSEM_XCHGADD_ALGORITHM
1017 config ARCH_HAS_ILOG2_U32
1021 config ARCH_HAS_ILOG2_U64
1025 config GENERIC_HWEIGHT
1029 config GENERIC_CALIBRATE_DELAY
1033 config SCHED_OMIT_FRAME_POINTER
1038 # Select some configuration options automatically based on user selections.
1043 config ARCH_MAY_HAVE_PC_FDC
1079 config MIPS_CLOCK_VSYSCALL
1080 def_bool CSRC_R4K || CLKSRC_MIPS_GIC
1083 select ARCH_REQUIRE_GPIOLIB
1089 config ARCH_DMA_ADDR_T_64BIT
1090 def_bool (HIGHMEM && ARCH_PHYS_ADDR_T_64BIT) || 64BIT
1092 config ARCH_SUPPORTS_UPROBES
1095 config DMA_MAYBE_COHERENT
1096 select DMA_NONCOHERENT
1102 config DMA_NONCOHERENT
1104 select NEED_DMA_MAP_STATE
1106 config NEED_DMA_MAP_STATE
1109 config SYS_HAS_EARLY_PRINTK
1113 bool "Support for hot-pluggable CPUs"
1114 depends on SMP && SYS_SUPPORTS_HOTPLUG_CPU
1116 Say Y here to allow turning CPUs off and on. CPUs can be
1117 controlled through /sys/devices/system/cpu.
1118 (Note: power management support will enable this option
1119 automatically on SMP systems. )
1120 Say N if you want to disable CPU hotplug.
1122 config SYS_SUPPORTS_HOTPLUG_CPU
1125 config MIPS_BONITO64
1140 config NO_IOPORT_MAP
1146 config GENERIC_ISA_DMA
1148 select ZONE_DMA if GENERIC_ISA_DMA_SUPPORT_BROKEN=n
1151 config GENERIC_ISA_DMA_SUPPORT_BROKEN
1153 select GENERIC_ISA_DMA
1158 config HOLES_IN_ZONE
1162 # Endianness selection. Sufficiently obscure so many users don't know what to
1163 # answer,so we try hard to limit the available choices. Also the use of a
1164 # choice statement should be more obvious to the user.
1167 prompt "Endianness selection"
1169 Some MIPS machines can be configured for either little or big endian
1170 byte order. These modes require different kernels and a different
1171 Linux distribution. In general there is one preferred byteorder for a
1172 particular system but some systems are just as commonly used in the
1173 one or the other endianness.
1175 config CPU_BIG_ENDIAN
1177 depends on SYS_SUPPORTS_BIG_ENDIAN
1179 config CPU_LITTLE_ENDIAN
1180 bool "Little endian"
1181 depends on SYS_SUPPORTS_LITTLE_ENDIAN
1188 config SYS_SUPPORTS_APM_EMULATION
1191 config SYS_SUPPORTS_BIG_ENDIAN
1194 config SYS_SUPPORTS_LITTLE_ENDIAN
1197 config SYS_SUPPORTS_HUGETLBFS
1199 depends on CPU_SUPPORTS_HUGEPAGES && 64BIT
1202 config MIPS_HUGE_TLB_SUPPORT
1203 def_bool HUGETLB_PAGE || TRANSPARENT_HUGEPAGE
1220 config PCI_GT64XXX_PCI0
1223 config NO_EXCEPT_FILL
1230 select DMA_NONCOHERENT
1232 select SWAP_IO_SPACE
1233 select SYS_HAS_CPU_R5500
1234 select SYS_SUPPORTS_32BIT_KERNEL
1235 select SYS_SUPPORTS_64BIT_KERNEL
1236 select SYS_SUPPORTS_BIG_ENDIAN
1243 select DMA_NONCOHERENT
1244 select SYS_HAS_CPU_MIPS32_R2
1245 select SYS_SUPPORTS_32BIT_KERNEL
1246 select SYS_SUPPORTS_LITTLE_ENDIAN
1247 select SYS_SUPPORTS_BIG_ENDIAN
1248 select SYS_SUPPORTS_MIPS16
1249 select CPU_MIPSR2_IRQ_VI
1258 config SWAP_IO_SPACE
1261 config SGI_HAS_INDYDOG
1273 config SGI_HAS_ZILOG
1276 config SGI_HAS_I8042
1279 config DEFAULT_SGI_PARTITION
1291 config MIPS_L1_CACHE_SHIFT_4
1294 config MIPS_L1_CACHE_SHIFT_5
1297 config MIPS_L1_CACHE_SHIFT_6
1300 config MIPS_L1_CACHE_SHIFT_7
1303 config MIPS_L1_CACHE_SHIFT
1305 default "7" if MIPS_L1_CACHE_SHIFT_7
1306 default "6" if MIPS_L1_CACHE_SHIFT_6
1307 default "5" if MIPS_L1_CACHE_SHIFT_5
1308 default "4" if MIPS_L1_CACHE_SHIFT_4
1311 config HAVE_STD_PC_SERIAL_PORT
1315 bool "ARC console support"
1316 depends on SGI_IP22 || SGI_IP28 || (SNI_RM && CPU_LITTLE_ENDIAN)
1320 depends on MACH_JAZZ || SNI_RM || SGI_IP32
1325 depends on MACH_JAZZ || SNI_RM || SGI_IP22 || SGI_IP28 || SGI_IP32
1334 menu "CPU selection"
1340 config CPU_LOONGSON3
1341 bool "Loongson 3 CPU"
1342 depends on SYS_HAS_CPU_LOONGSON3
1343 select CPU_SUPPORTS_64BIT_KERNEL
1344 select CPU_SUPPORTS_HIGHMEM
1345 select CPU_SUPPORTS_HUGEPAGES
1346 select WEAK_ORDERING
1347 select WEAK_REORDERING_BEYOND_LLSC
1348 select ARCH_REQUIRE_GPIOLIB
1350 The Loongson 3 processor implements the MIPS64R2 instruction
1351 set with many extensions.
1353 config CPU_LOONGSON2E
1355 depends on SYS_HAS_CPU_LOONGSON2E
1356 select CPU_LOONGSON2
1358 The Loongson 2E processor implements the MIPS III instruction set
1359 with many extensions.
1361 It has an internal FPGA northbridge, which is compatible to
1364 config CPU_LOONGSON2F
1366 depends on SYS_HAS_CPU_LOONGSON2F
1367 select CPU_LOONGSON2
1368 select ARCH_REQUIRE_GPIOLIB
1370 The Loongson 2F processor implements the MIPS III instruction set
1371 with many extensions.
1373 Loongson2F have built-in DDR2 and PCIX controller. The PCIX controller
1374 have a similar programming interface with FPGA northbridge used in
1377 config CPU_LOONGSON1B
1379 depends on SYS_HAS_CPU_LOONGSON1B
1380 select CPU_LOONGSON1
1382 The Loongson 1B is a 32-bit SoC, which implements the MIPS32
1383 release 2 instruction set.
1385 config CPU_MIPS32_R1
1386 bool "MIPS32 Release 1"
1387 depends on SYS_HAS_CPU_MIPS32_R1
1388 select CPU_HAS_PREFETCH
1389 select CPU_SUPPORTS_32BIT_KERNEL
1390 select CPU_SUPPORTS_HIGHMEM
1392 Choose this option to build a kernel for release 1 or later of the
1393 MIPS32 architecture. Most modern embedded systems with a 32-bit
1394 MIPS processor are based on a MIPS32 processor. If you know the
1395 specific type of processor in your system, choose those that one
1396 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1397 Release 2 of the MIPS32 architecture is available since several
1398 years so chances are you even have a MIPS32 Release 2 processor
1399 in which case you should choose CPU_MIPS32_R2 instead for better
1402 config CPU_MIPS32_R2
1403 bool "MIPS32 Release 2"
1404 depends on SYS_HAS_CPU_MIPS32_R2
1405 select CPU_HAS_PREFETCH
1406 select CPU_SUPPORTS_32BIT_KERNEL
1407 select CPU_SUPPORTS_HIGHMEM
1408 select CPU_SUPPORTS_MSA
1411 Choose this option to build a kernel for release 2 or later of the
1412 MIPS32 architecture. Most modern embedded systems with a 32-bit
1413 MIPS processor are based on a MIPS32 processor. If you know the
1414 specific type of processor in your system, choose those that one
1415 otherwise CPU_MIPS32_R1 is a safe bet for any MIPS32 system.
1417 config CPU_MIPS32_R6
1418 bool "MIPS32 Release 6"
1419 depends on SYS_HAS_CPU_MIPS32_R6
1420 select CPU_HAS_PREFETCH
1421 select CPU_SUPPORTS_32BIT_KERNEL
1422 select CPU_SUPPORTS_HIGHMEM
1423 select CPU_SUPPORTS_MSA
1426 select MIPS_O32_FP64_SUPPORT
1428 Choose this option to build a kernel for release 6 or later of the
1429 MIPS32 architecture. New MIPS processors, starting with the Warrior
1430 family, are based on a MIPS32r6 processor. If you own an older
1431 processor, you probably need to select MIPS32r1 or MIPS32r2 instead.
1433 config CPU_MIPS64_R1
1434 bool "MIPS64 Release 1"
1435 depends on SYS_HAS_CPU_MIPS64_R1
1436 select CPU_HAS_PREFETCH
1437 select CPU_SUPPORTS_32BIT_KERNEL
1438 select CPU_SUPPORTS_64BIT_KERNEL
1439 select CPU_SUPPORTS_HIGHMEM
1440 select CPU_SUPPORTS_HUGEPAGES
1442 Choose this option to build a kernel for release 1 or later of the
1443 MIPS64 architecture. Many modern embedded systems with a 64-bit
1444 MIPS processor are based on a MIPS64 processor. If you know the
1445 specific type of processor in your system, choose those that one
1446 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1447 Release 2 of the MIPS64 architecture is available since several
1448 years so chances are you even have a MIPS64 Release 2 processor
1449 in which case you should choose CPU_MIPS64_R2 instead for better
1452 config CPU_MIPS64_R2
1453 bool "MIPS64 Release 2"
1454 depends on SYS_HAS_CPU_MIPS64_R2
1455 select CPU_HAS_PREFETCH
1456 select CPU_SUPPORTS_32BIT_KERNEL
1457 select CPU_SUPPORTS_64BIT_KERNEL
1458 select CPU_SUPPORTS_HIGHMEM
1459 select CPU_SUPPORTS_HUGEPAGES
1460 select CPU_SUPPORTS_MSA
1462 Choose this option to build a kernel for release 2 or later of the
1463 MIPS64 architecture. Many modern embedded systems with a 64-bit
1464 MIPS processor are based on a MIPS64 processor. If you know the
1465 specific type of processor in your system, choose those that one
1466 otherwise CPU_MIPS64_R1 is a safe bet for any MIPS64 system.
1468 config CPU_MIPS64_R6
1469 bool "MIPS64 Release 6"
1470 depends on SYS_HAS_CPU_MIPS64_R6
1471 select CPU_HAS_PREFETCH
1472 select CPU_SUPPORTS_32BIT_KERNEL
1473 select CPU_SUPPORTS_64BIT_KERNEL
1474 select CPU_SUPPORTS_HIGHMEM
1475 select CPU_SUPPORTS_MSA
1477 select MIPS_O32_FP64_SUPPORT if MIPS32_O32
1479 Choose this option to build a kernel for release 6 or later of the
1480 MIPS64 architecture. New MIPS processors, starting with the Warrior
1481 family, are based on a MIPS64r6 processor. If you own an older
1482 processor, you probably need to select MIPS64r1 or MIPS64r2 instead.
1486 depends on SYS_HAS_CPU_R3000
1488 select CPU_SUPPORTS_32BIT_KERNEL
1489 select CPU_SUPPORTS_HIGHMEM
1491 Please make sure to pick the right CPU type. Linux/MIPS is not
1492 designed to be generic, i.e. Kernels compiled for R3000 CPUs will
1493 *not* work on R4000 machines and vice versa. However, since most
1494 of the supported machines have an R4000 (or similar) CPU, R4x00
1495 might be a safe bet. If the resulting kernel does not work,
1496 try to recompile with R3000.
1500 depends on SYS_HAS_CPU_TX39XX
1501 select CPU_SUPPORTS_32BIT_KERNEL
1505 depends on SYS_HAS_CPU_VR41XX
1506 select CPU_SUPPORTS_32BIT_KERNEL
1507 select CPU_SUPPORTS_64BIT_KERNEL
1509 The options selects support for the NEC VR4100 series of processors.
1510 Only choose this option if you have one of these processors as a
1511 kernel built with this option will not run on any other type of
1512 processor or vice versa.
1516 depends on SYS_HAS_CPU_R4300
1517 select CPU_SUPPORTS_32BIT_KERNEL
1518 select CPU_SUPPORTS_64BIT_KERNEL
1520 MIPS Technologies R4300-series processors.
1524 depends on SYS_HAS_CPU_R4X00
1525 select CPU_SUPPORTS_32BIT_KERNEL
1526 select CPU_SUPPORTS_64BIT_KERNEL
1527 select CPU_SUPPORTS_HUGEPAGES
1529 MIPS Technologies R4000-series processors other than 4300, including
1530 the R4000, R4400, R4600, and 4700.
1534 depends on SYS_HAS_CPU_TX49XX
1535 select CPU_HAS_PREFETCH
1536 select CPU_SUPPORTS_32BIT_KERNEL
1537 select CPU_SUPPORTS_64BIT_KERNEL
1538 select CPU_SUPPORTS_HUGEPAGES
1542 depends on SYS_HAS_CPU_R5000
1543 select CPU_SUPPORTS_32BIT_KERNEL
1544 select CPU_SUPPORTS_64BIT_KERNEL
1545 select CPU_SUPPORTS_HUGEPAGES
1547 MIPS Technologies R5000-series processors other than the Nevada.
1551 depends on SYS_HAS_CPU_R5432
1552 select CPU_SUPPORTS_32BIT_KERNEL
1553 select CPU_SUPPORTS_64BIT_KERNEL
1554 select CPU_SUPPORTS_HUGEPAGES
1558 depends on SYS_HAS_CPU_R5500
1559 select CPU_SUPPORTS_32BIT_KERNEL
1560 select CPU_SUPPORTS_64BIT_KERNEL
1561 select CPU_SUPPORTS_HUGEPAGES
1563 NEC VR5500 and VR5500A series processors implement 64-bit MIPS IV
1568 depends on SYS_HAS_CPU_R6000
1569 select CPU_SUPPORTS_32BIT_KERNEL
1571 MIPS Technologies R6000 and R6000A series processors. Note these
1572 processors are extremely rare and the support for them is incomplete.
1576 depends on SYS_HAS_CPU_NEVADA
1577 select CPU_SUPPORTS_32BIT_KERNEL
1578 select CPU_SUPPORTS_64BIT_KERNEL
1579 select CPU_SUPPORTS_HUGEPAGES
1581 QED / PMC-Sierra RM52xx-series ("Nevada") processors.
1585 depends on SYS_HAS_CPU_R8000
1586 select CPU_HAS_PREFETCH
1587 select CPU_SUPPORTS_64BIT_KERNEL
1589 MIPS Technologies R8000 processors. Note these processors are
1590 uncommon and the support for them is incomplete.
1594 depends on SYS_HAS_CPU_R10000
1595 select CPU_HAS_PREFETCH
1596 select CPU_SUPPORTS_32BIT_KERNEL
1597 select CPU_SUPPORTS_64BIT_KERNEL
1598 select CPU_SUPPORTS_HIGHMEM
1599 select CPU_SUPPORTS_HUGEPAGES
1601 MIPS Technologies R10000-series processors.
1605 depends on SYS_HAS_CPU_RM7000
1606 select CPU_HAS_PREFETCH
1607 select CPU_SUPPORTS_32BIT_KERNEL
1608 select CPU_SUPPORTS_64BIT_KERNEL
1609 select CPU_SUPPORTS_HIGHMEM
1610 select CPU_SUPPORTS_HUGEPAGES
1614 depends on SYS_HAS_CPU_SB1
1615 select CPU_SUPPORTS_32BIT_KERNEL
1616 select CPU_SUPPORTS_64BIT_KERNEL
1617 select CPU_SUPPORTS_HIGHMEM
1618 select CPU_SUPPORTS_HUGEPAGES
1619 select WEAK_ORDERING
1621 config CPU_CAVIUM_OCTEON
1622 bool "Cavium Octeon processor"
1623 depends on SYS_HAS_CPU_CAVIUM_OCTEON
1624 select CPU_HAS_PREFETCH
1625 select CPU_SUPPORTS_64BIT_KERNEL
1626 select WEAK_ORDERING
1627 select CPU_SUPPORTS_HIGHMEM
1628 select CPU_SUPPORTS_HUGEPAGES
1629 select USB_EHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1630 select USB_OHCI_BIG_ENDIAN_MMIO if CPU_BIG_ENDIAN
1631 select MIPS_L1_CACHE_SHIFT_7
1633 The Cavium Octeon processor is a highly integrated chip containing
1634 many ethernet hardware widgets for networking tasks. The processor
1635 can have up to 16 Mips64v2 cores and 8 integrated gigabit ethernets.
1636 Full details can be found at http://www.caviumnetworks.com.
1639 bool "Broadcom BMIPS"
1640 depends on SYS_HAS_CPU_BMIPS
1642 select CPU_BMIPS32_3300 if SYS_HAS_CPU_BMIPS32_3300
1643 select CPU_BMIPS4350 if SYS_HAS_CPU_BMIPS4350
1644 select CPU_BMIPS4380 if SYS_HAS_CPU_BMIPS4380
1645 select CPU_BMIPS5000 if SYS_HAS_CPU_BMIPS5000
1646 select CPU_SUPPORTS_32BIT_KERNEL
1647 select DMA_NONCOHERENT
1649 select SWAP_IO_SPACE
1650 select WEAK_ORDERING
1651 select CPU_SUPPORTS_HIGHMEM
1652 select CPU_HAS_PREFETCH
1654 Support for BMIPS32/3300/4350/4380 and BMIPS5000 processors.
1657 bool "Netlogic XLR SoC"
1658 depends on SYS_HAS_CPU_XLR
1659 select CPU_SUPPORTS_32BIT_KERNEL
1660 select CPU_SUPPORTS_64BIT_KERNEL
1661 select CPU_SUPPORTS_HIGHMEM
1662 select CPU_SUPPORTS_HUGEPAGES
1663 select WEAK_ORDERING
1664 select WEAK_REORDERING_BEYOND_LLSC
1666 Netlogic Microsystems XLR/XLS processors.
1669 bool "Netlogic XLP SoC"
1670 depends on SYS_HAS_CPU_XLP
1671 select CPU_SUPPORTS_32BIT_KERNEL
1672 select CPU_SUPPORTS_64BIT_KERNEL
1673 select CPU_SUPPORTS_HIGHMEM
1674 select WEAK_ORDERING
1675 select WEAK_REORDERING_BEYOND_LLSC
1676 select CPU_HAS_PREFETCH
1678 select CPU_SUPPORTS_HUGEPAGES
1680 Netlogic Microsystems XLP processors.
1683 config CPU_MIPS32_3_5_FEATURES
1684 bool "MIPS32 Release 3.5 Features"
1685 depends on SYS_HAS_CPU_MIPS32_R3_5
1686 depends on CPU_MIPS32_R2 || CPU_MIPS32_R6
1688 Choose this option to build a kernel for release 2 or later of the
1689 MIPS32 architecture including features from the 3.5 release such as
1690 support for Enhanced Virtual Addressing (EVA).
1692 config CPU_MIPS32_3_5_EVA
1693 bool "Enhanced Virtual Addressing (EVA)"
1694 depends on CPU_MIPS32_3_5_FEATURES
1698 Choose this option if you want to enable the Enhanced Virtual
1699 Addressing (EVA) on your MIPS32 core (such as proAptiv).
1700 One of its primary benefits is an increase in the maximum size
1701 of lowmem (up to 3GB). If unsure, say 'N' here.
1703 config CPU_MIPS32_R5_FEATURES
1704 bool "MIPS32 Release 5 Features"
1705 depends on SYS_HAS_CPU_MIPS32_R5
1706 depends on CPU_MIPS32_R2
1708 Choose this option to build a kernel for release 2 or later of the
1709 MIPS32 architecture including features from release 5 such as
1710 support for Extended Physical Addressing (XPA).
1712 config CPU_MIPS32_R5_XPA
1713 bool "Extended Physical Addressing (XPA)"
1714 depends on CPU_MIPS32_R5_FEATURES
1716 depends on !PAGE_SIZE_4KB
1717 depends on SYS_SUPPORTS_HIGHMEM
1720 select ARCH_PHYS_ADDR_T_64BIT
1723 Choose this option if you want to enable the Extended Physical
1724 Addressing (XPA) on your MIPS32 core (such as P5600 series). The
1725 benefit is to increase physical addressing equal to or greater
1726 than 40 bits. Note that this has the side effect of turning on
1727 64-bit addressing which in turn makes the PTEs 64-bit in size.
1728 If unsure, say 'N' here.
1731 config CPU_NOP_WORKAROUNDS
1734 config CPU_JUMP_WORKAROUNDS
1737 config CPU_LOONGSON2F_WORKAROUNDS
1738 bool "Loongson 2F Workarounds"
1740 select CPU_NOP_WORKAROUNDS
1741 select CPU_JUMP_WORKAROUNDS
1743 Loongson 2F01 / 2F02 processors have the NOP & JUMP issues which
1744 require workarounds. Without workarounds the system may hang
1745 unexpectedly. For more information please refer to the gas
1746 -mfix-loongson2f-nop and -mfix-loongson2f-jump options.
1748 Loongson 2F03 and later have fixed these issues and no workarounds
1749 are needed. The workarounds have no significant side effect on them
1750 but may decrease the performance of the system so this option should
1751 be disabled unless the kernel is intended to be run on 2F01 or 2F02
1754 If unsure, please say Y.
1755 endif # CPU_LOONGSON2F
1757 config SYS_SUPPORTS_ZBOOT
1759 select HAVE_KERNEL_GZIP
1760 select HAVE_KERNEL_BZIP2
1761 select HAVE_KERNEL_LZ4
1762 select HAVE_KERNEL_LZMA
1763 select HAVE_KERNEL_LZO
1764 select HAVE_KERNEL_XZ
1766 config SYS_SUPPORTS_ZBOOT_UART16550
1768 select SYS_SUPPORTS_ZBOOT
1770 config SYS_SUPPORTS_ZBOOT_UART_PROM
1772 select SYS_SUPPORTS_ZBOOT
1774 config CPU_LOONGSON2
1776 select CPU_SUPPORTS_32BIT_KERNEL
1777 select CPU_SUPPORTS_64BIT_KERNEL
1778 select CPU_SUPPORTS_HIGHMEM
1779 select CPU_SUPPORTS_HUGEPAGES
1781 config CPU_LOONGSON1
1785 select CPU_HAS_PREFETCH
1786 select CPU_SUPPORTS_32BIT_KERNEL
1787 select CPU_SUPPORTS_HIGHMEM
1788 select CPU_SUPPORTS_CPUFREQ
1790 config CPU_BMIPS32_3300
1791 select SMP_UP if SMP
1794 config CPU_BMIPS4350
1796 select SYS_SUPPORTS_SMP
1797 select SYS_SUPPORTS_HOTPLUG_CPU
1799 config CPU_BMIPS4380
1801 select MIPS_L1_CACHE_SHIFT_6
1802 select SYS_SUPPORTS_SMP
1803 select SYS_SUPPORTS_HOTPLUG_CPU
1805 config CPU_BMIPS5000
1807 select MIPS_CPU_SCACHE
1808 select MIPS_L1_CACHE_SHIFT_7
1809 select SYS_SUPPORTS_SMP
1810 select SYS_SUPPORTS_HOTPLUG_CPU
1812 config SYS_HAS_CPU_LOONGSON3
1814 select CPU_SUPPORTS_CPUFREQ
1816 config SYS_HAS_CPU_LOONGSON2E
1819 config SYS_HAS_CPU_LOONGSON2F
1821 select CPU_SUPPORTS_CPUFREQ
1822 select CPU_SUPPORTS_ADDRWINCFG if 64BIT
1823 select CPU_SUPPORTS_UNCACHED_ACCELERATED
1825 config SYS_HAS_CPU_LOONGSON1B
1828 config SYS_HAS_CPU_MIPS32_R1
1831 config SYS_HAS_CPU_MIPS32_R2
1834 config SYS_HAS_CPU_MIPS32_R3_5
1837 config SYS_HAS_CPU_MIPS32_R5
1840 config SYS_HAS_CPU_MIPS32_R6
1843 config SYS_HAS_CPU_MIPS64_R1
1846 config SYS_HAS_CPU_MIPS64_R2
1849 config SYS_HAS_CPU_MIPS64_R6
1852 config SYS_HAS_CPU_R3000
1855 config SYS_HAS_CPU_TX39XX
1858 config SYS_HAS_CPU_VR41XX
1861 config SYS_HAS_CPU_R4300
1864 config SYS_HAS_CPU_R4X00
1867 config SYS_HAS_CPU_TX49XX
1870 config SYS_HAS_CPU_R5000
1873 config SYS_HAS_CPU_R5432
1876 config SYS_HAS_CPU_R5500
1879 config SYS_HAS_CPU_R6000
1882 config SYS_HAS_CPU_NEVADA
1885 config SYS_HAS_CPU_R8000
1888 config SYS_HAS_CPU_R10000
1891 config SYS_HAS_CPU_RM7000
1894 config SYS_HAS_CPU_SB1
1897 config SYS_HAS_CPU_CAVIUM_OCTEON
1900 config SYS_HAS_CPU_BMIPS
1903 config SYS_HAS_CPU_BMIPS32_3300
1905 select SYS_HAS_CPU_BMIPS
1907 config SYS_HAS_CPU_BMIPS4350
1909 select SYS_HAS_CPU_BMIPS
1911 config SYS_HAS_CPU_BMIPS4380
1913 select SYS_HAS_CPU_BMIPS
1915 config SYS_HAS_CPU_BMIPS5000
1917 select SYS_HAS_CPU_BMIPS
1919 config SYS_HAS_CPU_XLR
1922 config SYS_HAS_CPU_XLP
1925 config MIPS_MALTA_PM
1926 depends on MIPS_MALTA
1932 # CPU may reorder R->R, R->W, W->R, W->W
1933 # Reordering beyond LL and SC is handled in WEAK_REORDERING_BEYOND_LLSC
1935 config WEAK_ORDERING
1939 # CPU may reorder reads and writes beyond LL/SC
1940 # CPU may reorder R->LL, R->LL, W->LL, W->LL, R->SC, R->SC, W->SC, W->SC
1942 config WEAK_REORDERING_BEYOND_LLSC
1947 # These two indicate any level of the MIPS32 and MIPS64 architecture
1951 default y if CPU_MIPS32_R1 || CPU_MIPS32_R2 || CPU_MIPS32_R6
1955 default y if CPU_MIPS64_R1 || CPU_MIPS64_R2 || CPU_MIPS64_R6
1958 # These two indicate the revision of the architecture, either Release 1 or Release 2
1962 default y if CPU_MIPS32_R1 || CPU_MIPS64_R1
1966 default y if CPU_MIPS32_R2 || CPU_MIPS64_R2 || CPU_CAVIUM_OCTEON
1971 default y if CPU_MIPS32_R6 || CPU_MIPS64_R6
1980 config SYS_SUPPORTS_32BIT_KERNEL
1982 config SYS_SUPPORTS_64BIT_KERNEL
1984 config CPU_SUPPORTS_32BIT_KERNEL
1986 config CPU_SUPPORTS_64BIT_KERNEL
1988 config CPU_SUPPORTS_CPUFREQ
1990 config CPU_SUPPORTS_ADDRWINCFG
1992 config CPU_SUPPORTS_HUGEPAGES
1994 config CPU_SUPPORTS_UNCACHED_ACCELERATED
1996 config MIPS_PGD_C0_CONTEXT
1998 default y if 64BIT && CPU_MIPSR2 && !CPU_XLP
2001 # Set to y for ptrace access to watch registers.
2003 config HARDWARE_WATCHPOINTS
2005 default y if CPU_MIPSR1 || CPU_MIPSR2 || CPU_MIPSR6
2010 prompt "Kernel code model"
2012 You should only select this option if you have a workload that
2013 actually benefits from 64-bit processing or if your machine has
2014 large memory. You will only be presented a single option in this
2015 menu if your system does not support both 32-bit and 64-bit kernels.
2018 bool "32-bit kernel"
2019 depends on CPU_SUPPORTS_32BIT_KERNEL && SYS_SUPPORTS_32BIT_KERNEL
2022 Select this option if you want to build a 32-bit kernel.
2025 bool "64-bit kernel"
2026 depends on CPU_SUPPORTS_64BIT_KERNEL && SYS_SUPPORTS_64BIT_KERNEL
2028 Select this option if you want to build a 64-bit kernel.
2033 bool "KVM Guest Kernel"
2034 depends on BROKEN_ON_SMP
2036 Select this option if building a guest kernel for KVM (Trap & Emulate)
2039 config KVM_GUEST_TIMER_FREQ
2040 int "Count/Compare Timer Frequency (MHz)"
2041 depends on KVM_GUEST
2044 Set this to non-zero if building a guest kernel for KVM to skip RTC
2045 emulation when determining guest CPU Frequency. Instead, the guest's
2046 timer frequency is specified directly.
2049 prompt "Kernel page size"
2050 default PAGE_SIZE_4KB
2052 config PAGE_SIZE_4KB
2054 depends on !CPU_LOONGSON2 && !CPU_LOONGSON3
2056 This option select the standard 4kB Linux page size. On some
2057 R3000-family processors this is the only available page size. Using
2058 4kB page size will minimize memory consumption and is therefore
2059 recommended for low memory systems.
2061 config PAGE_SIZE_8KB
2063 depends on CPU_R8000 || CPU_CAVIUM_OCTEON
2065 Using 8kB page size will result in higher performance kernel at
2066 the price of higher memory consumption. This option is available
2067 only on R8000 and cnMIPS processors. Note that you will need a
2068 suitable Linux distribution to support this.
2070 config PAGE_SIZE_16KB
2072 depends on !CPU_R3000 && !CPU_TX39XX
2074 Using 16kB page size will result in higher performance kernel at
2075 the price of higher memory consumption. This option is available on
2076 all non-R3000 family processors. Note that you will need a suitable
2077 Linux distribution to support this.
2079 config PAGE_SIZE_32KB
2081 depends on CPU_CAVIUM_OCTEON
2083 Using 32kB page size will result in higher performance kernel at
2084 the price of higher memory consumption. This option is available
2085 only on cnMIPS cores. Note that you will need a suitable Linux
2086 distribution to support this.
2088 config PAGE_SIZE_64KB
2090 depends on !CPU_R3000 && !CPU_TX39XX && !CPU_R6000
2092 Using 64kB page size will result in higher performance kernel at
2093 the price of higher memory consumption. This option is available on
2094 all non-R3000 family processor. Not that at the time of this
2095 writing this option is still high experimental.
2099 config FORCE_MAX_ZONEORDER
2100 int "Maximum zone order"
2101 range 14 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2102 default "14" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_64KB
2103 range 13 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2104 default "13" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_32KB
2105 range 12 64 if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2106 default "12" if MIPS_HUGE_TLB_SUPPORT && PAGE_SIZE_16KB
2110 The kernel memory allocator divides physically contiguous memory
2111 blocks into "zones", where each zone is a power of two number of
2112 pages. This option selects the largest power of two that the kernel
2113 keeps in the memory allocator. If you need to allocate very large
2114 blocks of physically contiguous memory, then you may need to
2115 increase this value.
2117 This config option is actually maximum order plus one. For example,
2118 a value of 11 means that the largest free memory block is 2^10 pages.
2120 The page size is not necessarily 4KB. Keep this in mind
2121 when choosing a value for this option.
2126 config IP22_CPU_SCACHE
2131 # Support for a MIPS32 / MIPS64 style S-caches
2133 config MIPS_CPU_SCACHE
2137 config R5000_CPU_SCACHE
2141 config RM7000_CPU_SCACHE
2145 config SIBYTE_DMA_PAGEOPS
2146 bool "Use DMA to clear/copy pages"
2149 Instead of using the CPU to zero and copy pages, use a Data Mover
2150 channel. These DMA channels are otherwise unused by the standard
2151 SiByte Linux port. Seems to give a small performance benefit.
2153 config CPU_HAS_PREFETCH
2156 config CPU_GENERIC_DUMP_TLB
2158 default y if !(CPU_R3000 || CPU_R6000 || CPU_R8000 || CPU_TX39XX)
2162 default y if !(CPU_R3000 || CPU_R6000 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2164 config CPU_R4K_CACHE_TLB
2166 default y if !(CPU_R3000 || CPU_R8000 || CPU_SB1 || CPU_TX39XX || CPU_CAVIUM_OCTEON)
2169 bool "MIPS MT SMP support (1 TC on each available VPE)"
2170 depends on SYS_SUPPORTS_MULTITHREADING && !CPU_MIPSR6
2171 select CPU_MIPSR2_IRQ_VI
2172 select CPU_MIPSR2_IRQ_EI
2177 select SYS_SUPPORTS_SMP
2178 select SYS_SUPPORTS_SCHED_SMT
2179 select MIPS_PERF_SHARED_TC_COUNTERS
2181 This is a kernel model which is known as SMVP. This is supported
2182 on cores with the MT ASE and uses the available VPEs to implement
2183 virtual processors which supports SMP. This is equivalent to the
2184 Intel Hyperthreading feature. For further information go to
2185 <http://www.imgtec.com/mips/mips-multithreading.asp>.
2191 bool "SMT (multithreading) scheduler support"
2192 depends on SYS_SUPPORTS_SCHED_SMT
2195 SMT scheduler support improves the CPU scheduler's decision making
2196 when dealing with MIPS MT enabled cores at a cost of slightly
2197 increased overhead in some places. If unsure say N here.
2199 config SYS_SUPPORTS_SCHED_SMT
2202 config SYS_SUPPORTS_MULTITHREADING
2205 config MIPS_MT_FPAFF
2206 bool "Dynamic FPU affinity for FP-intensive threads"
2208 depends on MIPS_MT_SMP
2210 config MIPSR2_TO_R6_EMULATOR
2211 bool "MIPS R2-to-R6 emulator"
2212 depends on CPU_MIPSR6 && !SMP
2215 Choose this option if you want to run non-R6 MIPS userland code.
2216 Even if you say 'Y' here, the emulator will still be disabled by
2217 default. You can enable it using the 'mipsr2emu' kernel option.
2218 The only reason this is a build-time option is to save ~14K from the
2220 comment "MIPS R2-to-R6 emulator is only available for UP kernels"
2221 depends on SMP && CPU_MIPSR6
2223 config MIPS_VPE_LOADER
2224 bool "VPE loader support."
2225 depends on SYS_SUPPORTS_MULTITHREADING && MODULES
2226 select CPU_MIPSR2_IRQ_VI
2227 select CPU_MIPSR2_IRQ_EI
2230 Includes a loader for loading an elf relocatable object
2231 onto another VPE and running it.
2233 config MIPS_VPE_LOADER_CMP
2236 depends on MIPS_VPE_LOADER && MIPS_CMP
2238 config MIPS_VPE_LOADER_MT
2241 depends on MIPS_VPE_LOADER && !MIPS_CMP
2243 config MIPS_VPE_LOADER_TOM
2244 bool "Load VPE program into memory hidden from linux"
2245 depends on MIPS_VPE_LOADER
2248 The loader can use memory that is present but has been hidden from
2249 Linux using the kernel command line option "mem=xxMB". It's up to
2250 you to ensure the amount you put in the option and the space your
2251 program requires is less or equal to the amount physically present.
2253 config MIPS_VPE_APSP_API
2254 bool "Enable support for AP/SP API (RTLX)"
2255 depends on MIPS_VPE_LOADER
2258 config MIPS_VPE_APSP_API_CMP
2261 depends on MIPS_VPE_APSP_API && MIPS_CMP
2263 config MIPS_VPE_APSP_API_MT
2266 depends on MIPS_VPE_APSP_API && !MIPS_CMP
2269 bool "MIPS CMP framework support (DEPRECATED)"
2270 depends on SYS_SUPPORTS_MIPS_CMP && !CPU_MIPSR6
2273 select SYS_SUPPORTS_SMP
2274 select WEAK_ORDERING
2277 Select this if you are using a bootloader which implements the "CMP
2278 framework" protocol (ie. YAMON) and want your kernel to make use of
2279 its ability to start secondary CPUs.
2281 Unless you have a specific need, you should use CONFIG_MIPS_CPS
2285 bool "MIPS Coherent Processing System support"
2286 depends on SYS_SUPPORTS_MIPS_CPS
2289 select MIPS_CPS_PM if HOTPLUG_CPU
2291 select SYNC_R4K if (CEVT_R4K || CSRC_R4K)
2292 select SYS_SUPPORTS_HOTPLUG_CPU
2293 select SYS_SUPPORTS_SMP
2294 select WEAK_ORDERING
2296 Select this if you wish to run an SMP kernel across multiple cores
2297 within a MIPS Coherent Processing System. When this option is
2298 enabled the kernel will probe for other cores and boot them with
2299 no external assistance. It is safe to enable this when hardware
2300 support is unavailable.
2313 config SB1_PASS_2_WORKAROUNDS
2315 depends on CPU_SB1 && (CPU_SB1_PASS_2_2 || CPU_SB1_PASS_2)
2318 config SB1_PASS_2_1_WORKAROUNDS
2320 depends on CPU_SB1 && CPU_SB1_PASS_2
2324 config ARCH_PHYS_ADDR_T_64BIT
2328 prompt "SmartMIPS or microMIPS ASE support"
2330 config CPU_NEEDS_NO_SMARTMIPS_OR_MICROMIPS
2333 Select this if you want neither microMIPS nor SmartMIPS support
2335 config CPU_HAS_SMARTMIPS
2336 depends on SYS_SUPPORTS_SMARTMIPS
2339 SmartMIPS is a extension of the MIPS32 architecture aimed at
2340 increased security at both hardware and software level for
2341 smartcards. Enabling this option will allow proper use of the
2342 SmartMIPS instructions by Linux applications. However a kernel with
2343 this option will not work on a MIPS core without SmartMIPS core. If
2344 you don't know you probably don't have SmartMIPS and should say N
2347 config CPU_MICROMIPS
2348 depends on 32BIT && SYS_SUPPORTS_MICROMIPS && !CPU_MIPSR6
2351 When this option is enabled the kernel will be built using the
2357 bool "Support for the MIPS SIMD Architecture"
2358 depends on CPU_SUPPORTS_MSA
2359 depends on 64BIT || MIPS_O32_FP64_SUPPORT
2361 MIPS SIMD Architecture (MSA) introduces 128 bit wide vector registers
2362 and a set of SIMD instructions to operate on them. When this option
2363 is enabled the kernel will support allocating & switching MSA
2364 vector register contexts. If you know that your kernel will only be
2365 running on CPUs which do not support MSA or that your userland will
2366 not be making use of it then you may wish to say N here to reduce
2367 the size & complexity of your kernel.
2378 # Vectored interrupt mode is an R2 feature
2380 config CPU_MIPSR2_IRQ_VI
2384 # Extended interrupt mode is an R2 feature
2386 config CPU_MIPSR2_IRQ_EI
2391 depends on !CPU_R3000
2397 config CPU_DADDI_WORKAROUNDS
2400 config CPU_R4000_WORKAROUNDS
2402 select CPU_R4400_WORKAROUNDS
2404 config CPU_R4400_WORKAROUNDS
2408 # - Highmem only makes sense for the 32-bit kernel.
2409 # - The current highmem code will only work properly on physically indexed
2410 # caches such as R3000, SB1, R7000 or those that look like they're virtually
2411 # indexed such as R4000/R4400 SC and MC versions or R10000. So for the
2412 # moment we protect the user and offer the highmem option only on machines
2413 # where it's known to be safe. This will not offer highmem on a few systems
2414 # such as MIPS32 and MIPS64 CPUs which may have virtual and physically
2415 # indexed CPUs but we're playing safe.
2416 # - We use SYS_SUPPORTS_HIGHMEM to offer highmem only for systems where we
2417 # know they might have memory configurations that could make use of highmem
2421 bool "High Memory Support"
2422 depends on 32BIT && CPU_SUPPORTS_HIGHMEM && SYS_SUPPORTS_HIGHMEM && !CPU_MIPS32_3_5_EVA
2424 config CPU_SUPPORTS_HIGHMEM
2427 config SYS_SUPPORTS_HIGHMEM
2430 config SYS_SUPPORTS_SMARTMIPS
2433 config SYS_SUPPORTS_MICROMIPS
2436 config SYS_SUPPORTS_MIPS16
2439 This option must be set if a kernel might be executed on a MIPS16-
2440 enabled CPU even if MIPS16 is not actually being used. In other
2441 words, it makes the kernel MIPS16-tolerant.
2443 config CPU_SUPPORTS_MSA
2446 config ARCH_FLATMEM_ENABLE
2448 depends on !NUMA && !CPU_LOONGSON2
2450 config ARCH_DISCONTIGMEM_ENABLE
2452 default y if SGI_IP27
2454 Say Y to support efficient handling of discontiguous physical memory,
2455 for architectures which are either NUMA (Non-Uniform Memory Access)
2456 or have huge holes in the physical address space for other reasons.
2457 See <file:Documentation/vm/numa> for more.
2459 config ARCH_SPARSEMEM_ENABLE
2461 select SPARSEMEM_STATIC
2465 depends on SYS_SUPPORTS_NUMA
2467 Say Y to compile the kernel to support NUMA (Non-Uniform Memory
2468 Access). This option improves performance on systems with more
2469 than two nodes; on two node systems it is generally better to
2470 leave it disabled; on single node systems disable this option
2473 config SYS_SUPPORTS_NUMA
2476 config RELOCATION_TABLE_SIZE
2477 hex "Relocation table size"
2478 depends on RELOCATABLE
2479 range 0x0 0x01000000
2480 default "0x00100000"
2482 A table of relocation data will be appended to the kernel binary
2483 and parsed at boot to fix up the relocated kernel.
2485 This option allows the amount of space reserved for the table to be
2486 adjusted, although the default of 1Mb should be ok in most cases.
2488 The build will fail and a valid size suggested if this is too small.
2490 If unsure, leave at the default value.
2495 depends on NEED_MULTIPLE_NODES
2497 config HW_PERF_EVENTS
2498 bool "Enable hardware performance counter support for perf events"
2499 depends on PERF_EVENTS && OPROFILE=n && (CPU_MIPS32 || CPU_MIPS64 || CPU_R10000 || CPU_SB1 || CPU_CAVIUM_OCTEON || CPU_XLP || CPU_LOONGSON3)
2502 Enable hardware performance counter support for perf events. If
2503 disabled, perf events will use software events only.
2508 bool "Multi-Processing support"
2509 depends on SYS_SUPPORTS_SMP
2511 This enables support for systems with more than one CPU. If you have
2512 a system with only one CPU, say N. If you have a system with more
2513 than one CPU, say Y.
2515 If you say N here, the kernel will run on uni- and multiprocessor
2516 machines, but will use only one CPU of a multiprocessor machine. If
2517 you say Y here, the kernel will run on many, but not all,
2518 uniprocessor machines. On a uniprocessor machine, the kernel
2519 will run faster if you say N here.
2521 People using multiprocessor machines who say Y here should also say
2522 Y to "Enhanced Real Time Clock Support", below.
2524 See also the SMP-HOWTO available at
2525 <http://www.tldp.org/docs.html#howto>.
2527 If you don't know what to do here, say N.
2532 config SYS_SUPPORTS_MIPS_CMP
2535 config SYS_SUPPORTS_MIPS_CPS
2538 config SYS_SUPPORTS_SMP
2541 config NR_CPUS_DEFAULT_4
2544 config NR_CPUS_DEFAULT_8
2547 config NR_CPUS_DEFAULT_16
2550 config NR_CPUS_DEFAULT_32
2553 config NR_CPUS_DEFAULT_64
2557 int "Maximum number of CPUs (2-256)"
2560 default "4" if NR_CPUS_DEFAULT_4
2561 default "8" if NR_CPUS_DEFAULT_8
2562 default "16" if NR_CPUS_DEFAULT_16
2563 default "32" if NR_CPUS_DEFAULT_32
2564 default "64" if NR_CPUS_DEFAULT_64
2566 This allows you to specify the maximum number of CPUs which this
2567 kernel will support. The maximum supported value is 32 for 32-bit
2568 kernel and 64 for 64-bit kernels; the minimum value which makes
2569 sense is 1 for Qemu (useful only for kernel debugging purposes)
2570 and 2 for all others.
2572 This is purely to save memory - each supported CPU adds
2573 approximately eight kilobytes to the kernel image. For best
2574 performance should round up your number of processors to the next
2577 config MIPS_PERF_SHARED_TC_COUNTERS
2581 # Timer Interrupt Frequency Configuration
2585 prompt "Timer frequency"
2588 Allows the configuration of the timer frequency.
2591 bool "24 HZ" if SYS_SUPPORTS_24HZ || SYS_SUPPORTS_ARBIT_HZ
2594 bool "48 HZ" if SYS_SUPPORTS_48HZ || SYS_SUPPORTS_ARBIT_HZ
2597 bool "100 HZ" if SYS_SUPPORTS_100HZ || SYS_SUPPORTS_ARBIT_HZ
2600 bool "128 HZ" if SYS_SUPPORTS_128HZ || SYS_SUPPORTS_ARBIT_HZ
2603 bool "250 HZ" if SYS_SUPPORTS_250HZ || SYS_SUPPORTS_ARBIT_HZ
2606 bool "256 HZ" if SYS_SUPPORTS_256HZ || SYS_SUPPORTS_ARBIT_HZ
2609 bool "1000 HZ" if SYS_SUPPORTS_1000HZ || SYS_SUPPORTS_ARBIT_HZ
2612 bool "1024 HZ" if SYS_SUPPORTS_1024HZ || SYS_SUPPORTS_ARBIT_HZ
2616 config SYS_SUPPORTS_24HZ
2619 config SYS_SUPPORTS_48HZ
2622 config SYS_SUPPORTS_100HZ
2625 config SYS_SUPPORTS_128HZ
2628 config SYS_SUPPORTS_250HZ
2631 config SYS_SUPPORTS_256HZ
2634 config SYS_SUPPORTS_1000HZ
2637 config SYS_SUPPORTS_1024HZ
2640 config SYS_SUPPORTS_ARBIT_HZ
2642 default y if !SYS_SUPPORTS_24HZ && \
2643 !SYS_SUPPORTS_48HZ && \
2644 !SYS_SUPPORTS_100HZ && \
2645 !SYS_SUPPORTS_128HZ && \
2646 !SYS_SUPPORTS_250HZ && \
2647 !SYS_SUPPORTS_256HZ && \
2648 !SYS_SUPPORTS_1000HZ && \
2649 !SYS_SUPPORTS_1024HZ
2655 default 100 if HZ_100
2656 default 128 if HZ_128
2657 default 250 if HZ_250
2658 default 256 if HZ_256
2659 default 1000 if HZ_1000
2660 default 1024 if HZ_1024
2663 def_bool HIGH_RES_TIMERS
2665 source "kernel/Kconfig.preempt"
2668 bool "Kexec system call"
2671 kexec is a system call that implements the ability to shutdown your
2672 current kernel, and to start another kernel. It is like a reboot
2673 but it is independent of the system firmware. And like a reboot
2674 you can start any kernel with it, not just Linux.
2676 The name comes from the similarity to the exec system call.
2678 It is an ongoing process to be certain the hardware in a machine
2679 is properly shutdown, so do not be surprised if this code does not
2680 initially work for you. As of this writing the exact hardware
2681 interface is strongly in flux, so no good recommendation can be
2685 bool "Kernel crash dumps"
2687 Generate crash dump after being started by kexec.
2688 This should be normally only set in special crash dump kernels
2689 which are loaded in the main kernel with kexec-tools into
2690 a specially reserved region and then later executed after
2691 a crash by kdump/kexec. The crash dump kernel must be compiled
2692 to a memory address not used by the main kernel or firmware using
2695 config PHYSICAL_START
2696 hex "Physical address where the kernel is loaded"
2697 default "0xffffffff84000000" if 64BIT
2698 default "0x84000000" if 32BIT
2699 depends on CRASH_DUMP
2701 This gives the CKSEG0 or KSEG0 address where the kernel is loaded.
2702 If you plan to use kernel for capturing the crash dump change
2703 this value to start of the reserved region (the "X" value as
2704 specified in the "crashkernel=YM@XM" command line boot parameter
2705 passed to the panic-ed kernel).
2708 bool "Enable seccomp to safely compute untrusted bytecode"
2712 This kernel feature is useful for number crunching applications
2713 that may need to compute untrusted bytecode during their
2714 execution. By using pipes or other transports made available to
2715 the process as file descriptors supporting the read/write
2716 syscalls, it's possible to isolate those applications in
2717 their own address space using seccomp. Once seccomp is
2718 enabled via /proc/<pid>/seccomp, it cannot be disabled
2719 and the task is only allowed to execute a few safe syscalls
2720 defined by each seccomp mode.
2722 If unsure, say Y. Only embedded should say N here.
2724 config MIPS_O32_FP64_SUPPORT
2725 bool "Support for O32 binaries using 64-bit FP"
2726 depends on 32BIT || MIPS32_O32
2728 When this is enabled, the kernel will support use of 64-bit floating
2729 point registers with binaries using the O32 ABI along with the
2730 EF_MIPS_FP64 ELF header flag (typically built with -mfp64). On
2731 32-bit MIPS systems this support is at the cost of increasing the
2732 size and complexity of the compiled FPU emulator. Thus if you are
2733 running a MIPS32 system and know that none of your userland binaries
2734 will require 64-bit floating point, you may wish to reduce the size
2735 of your kernel & potentially improve FP emulation performance by
2738 Although binutils currently supports use of this flag the details
2739 concerning its effect upon the O32 ABI in userland are still being
2740 worked on. In order to avoid userland becoming dependant upon current
2741 behaviour before the details have been finalised, this option should
2742 be considered experimental and only enabled by those working upon
2750 select OF_EARLY_FLATTREE
2757 prompt "Kernel appended dtb support" if USE_OF
2758 default MIPS_NO_APPENDED_DTB
2760 config MIPS_NO_APPENDED_DTB
2763 Do not enable appended dtb support.
2765 config MIPS_ELF_APPENDED_DTB
2768 With this option, the boot code will look for a device tree binary
2769 DTB) included in the vmlinux ELF section .appended_dtb. By default
2770 it is empty and the DTB can be appended using binutils command
2773 objcopy --update-section .appended_dtb=<filename>.dtb vmlinux
2775 This is meant as a backward compatiblity convenience for those
2776 systems with a bootloader that can't be upgraded to accommodate
2777 the documented boot protocol using a device tree.
2779 config MIPS_RAW_APPENDED_DTB
2782 With this option, the boot code will look for a device tree binary
2783 DTB) appended to raw vmlinux.bin (without decompressor).
2784 (e.g. cat vmlinux.bin <filename>.dtb > vmlinux_w_dtb).
2786 This is meant as a backward compatibility convenience for those
2787 systems with a bootloader that can't be upgraded to accommodate
2788 the documented boot protocol using a device tree.
2790 Beware that there is very little in terms of protection against
2791 this option being confused by leftover garbage in memory that might
2792 look like a DTB header after a reboot if no actual DTB is appended
2793 to vmlinux.bin. Do not leave this option active in a production kernel
2794 if you don't intend to always append a DTB.
2796 config MIPS_ZBOOT_APPENDED_DTB
2798 depends on SYS_SUPPORTS_ZBOOT
2800 With this option, the boot code will look for a device tree binary
2801 DTB) appended to raw vmlinuz.bin (with decompressor).
2802 (e.g. cat vmlinuz.bin <filename>.dtb > vmlinuz_w_dtb).
2804 This is meant as a backward compatibility convenience for those
2805 systems with a bootloader that can't be upgraded to accommodate
2806 the documented boot protocol using a device tree.
2808 Beware that there is very little in terms of protection against
2809 this option being confused by leftover garbage in memory that might
2810 look like a DTB header after a reboot if no actual DTB is appended
2811 to vmlinuz.bin. Do not leave this option active in a production kernel
2812 if you don't intend to always append a DTB.
2816 prompt "Kernel command line type" if !CMDLINE_OVERRIDE
2817 default MIPS_CMDLINE_FROM_DTB if USE_OF && !ATH79 && !MACH_INGENIC && \
2818 !MIPS_MALTA && !MIPS_SEAD3 && \
2820 default MIPS_CMDLINE_FROM_BOOTLOADER
2822 config MIPS_CMDLINE_FROM_DTB
2824 bool "Dtb kernel arguments if available"
2826 config MIPS_CMDLINE_DTB_EXTEND
2828 bool "Extend dtb kernel arguments with bootloader arguments"
2830 config MIPS_CMDLINE_FROM_BOOTLOADER
2831 bool "Bootloader kernel arguments if available"
2836 config LOCKDEP_SUPPORT
2840 config STACKTRACE_SUPPORT
2844 config HAVE_LATENCYTOP_SUPPORT
2848 config PGTABLE_LEVELS
2850 default 3 if 64BIT && !PAGE_SIZE_64KB
2853 source "init/Kconfig"
2855 source "kernel/Kconfig.freezer"
2857 menu "Bus options (PCI, PCMCIA, EISA, ISA, TC)"
2865 bool "Support for PCI controller"
2866 depends on HW_HAS_PCI
2868 select NO_GENERIC_PCI_IOPORT_MAP
2870 Find out whether you have a PCI motherboard. PCI is the name of a
2871 bus system, i.e. the way the CPU talks to the other stuff inside
2872 your box. Other bus systems are ISA, EISA, or VESA. If you have PCI,
2876 bool "Support for HT-linked PCI"
2878 depends on CPU_LOONGSON3
2882 Loongson family machines use Hyper-Transport bus for inter-core
2883 connection and device connection. The PCI bus is a subordinate
2884 linked at HT. Choose Y for Loongson-3 based machines.
2889 source "drivers/pci/Kconfig"
2892 # ISA support is now enabled via select. Too many systems still have the one
2893 # or other ISA chip on the board that users don't know about so don't expect
2894 # users to choose the right thing ...
2901 depends on HW_HAS_EISA
2903 select GENERIC_ISA_DMA
2905 The Extended Industry Standard Architecture (EISA) bus was
2906 developed as an open alternative to the IBM MicroChannel bus.
2908 The EISA bus provided some of the features of the IBM MicroChannel
2909 bus while maintaining backward compatibility with cards made for
2910 the older ISA bus. The EISA bus saw limited use between 1988 and
2911 1995 when it was made obsolete by the PCI bus.
2913 Say Y here if you are building a kernel for an EISA-based machine.
2917 source "drivers/eisa/Kconfig"
2920 bool "TURBOchannel support"
2921 depends on MACH_DECSTATION
2923 TURBOchannel is a DEC (now Compaq (now HP)) bus for Alpha and MIPS
2924 processors. TURBOchannel programming specifications are available
2926 <ftp://ftp.hp.com/pub/alphaserver/archive/triadd/>
2928 <http://www.computer-refuge.org/classiccmp/ftp.digital.com/pub/DEC/TriAdd/>
2929 Linux driver support status is documented at:
2930 <http://www.linux-mips.org/wiki/DECstation>
2940 select MIPS_EXTERNAL_TIMER
2948 source "drivers/pcmcia/Kconfig"
2951 tristate "RapidIO support"
2955 If you say Y here, the kernel will include drivers and
2956 infrastructure code to support RapidIO interconnect devices.
2958 source "drivers/rapidio/Kconfig"
2962 menu "Executable file formats"
2964 source "fs/Kconfig.binfmt"
2969 config MIPS32_COMPAT
2975 config SYSVIPC_COMPAT
2979 bool "Kernel support for o32 binaries"
2981 select ARCH_WANT_OLD_COMPAT_IPC
2983 select MIPS32_COMPAT
2984 select SYSVIPC_COMPAT if SYSVIPC
2986 Select this option if you want to run o32 binaries. These are pure
2987 32-bit binaries as used by the 32-bit Linux/MIPS port. Most of
2988 existing binaries are in this format.
2993 bool "Kernel support for n32 binaries"
2996 select MIPS32_COMPAT
2997 select SYSVIPC_COMPAT if SYSVIPC
2999 Select this option if you want to run n32 binaries. These are
3000 64-bit binaries using 32-bit quantities for addressing and certain
3001 data that would normally be 64-bit. They are used in special
3008 default y if MIPS32_O32 || MIPS32_N32
3012 menu "Power management options"
3014 config ARCH_HIBERNATION_POSSIBLE
3016 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3018 config ARCH_SUSPEND_POSSIBLE
3020 depends on SYS_SUPPORTS_HOTPLUG_CPU || !SMP
3022 source "kernel/power/Kconfig"
3026 config MIPS_EXTERNAL_TIMER
3029 menu "CPU Power Management"
3031 if CPU_SUPPORTS_CPUFREQ && MIPS_EXTERNAL_TIMER
3032 source "drivers/cpufreq/Kconfig"
3035 source "drivers/cpuidle/Kconfig"
3039 source "net/Kconfig"
3041 source "drivers/Kconfig"
3043 source "drivers/firmware/Kconfig"
3047 source "arch/mips/Kconfig.debug"
3049 source "security/Kconfig"
3051 source "crypto/Kconfig"
3053 source "lib/Kconfig"
3055 source "arch/mips/kvm/Kconfig"